MRCOOL DIY® 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O
Picture this: You’re walking into a client’s space—maybe it’s a high-end home office, a boutique retail shop, or a rental unit that needs a comfort upgrade. You want to deliver not just climate control, but a solution that’s fast, flawless, and future-ready. The MRCOOL DIY® 5th Gen 18K BTU Single Zone Mini Split is your answer—and your competitive advantage.
Why Business Owners and Contractors Choose MRCOOL
Every job is an opportunity to boost your reputation and maximize your profits. With MRCOOL’s 18,000 BTU system, you’re equipped to deliver year-round heating and cooling for spaces from 500 to 750 sq. ft.—all with a system that’s designed for rapid, no-hassle installation. No more waiting on specialty tools or scheduling extra labor. The pre-charged QuickConnect® line set and DIYPRO® cable mean you’re in and out, with a satisfied client and zero callbacks.
Scale Your Business:Install multiple units in a single day and keep projects moving. This is the bulk-ready solution for contractors and business owners who want to grow.
Future-Proof Efficiency:The R-454B refrigerant isn’t just better for the planet—it’s a selling point for eco-conscious clients who want the latest in HVAC technology.
Smart Comfort Sells:Offer your clients wireless control from anywhere—remote, app, or voice (Alexa and Google Assistant). They’ll love the flexibility, and you’ll love the repeat business.
Built to Last:The Gold Fin® condenser resists corrosion, making this unit a smart investment for coastal or challenging environments.
Reliability That Builds Trust:Intertek certification and an industry-leading warranty (lifetime with registration, 7-year compressor, 5-year parts) mean you can install with confidence and guarantee peace of mind.
Standout Features
Effortless, tool-free installation—no vacuum pump, no experience needed
Perfect for 500–750 sq. ft.—offices, studios, bedrooms, and more
Dry Mode—dehumidifies for healthier air quality
Follow Me Function—personalized comfort wherever your client is
Smart controls—remote, app, and voice command ready
The Result
You finish the job quickly, your client walks into a perfectly comfortable space, and your business stands out as the go-to for fast, smart, and reliable HVAC installs. With MRCOOL DIY®, you’re not just installing a mini split—you’re building your reputation, one satisfied customer at a time.
Upgrade your installs. Impress your clients. Grow your business with MRCOOL DIY® 5th Gen 18K BTU.
SPECIFICATIONS & DIMENSIONS
Dimensions & Weight
Condenser Dimensions
35.04 W" x 13.46 D" x 26.50 H"
Air Handler Dimensions
42.52 W" x 8.90 D" x 13.19 H"
Condenser Weight
93.48 lbs / 42.4 kg
Air Handler Weight
35.49 lbs / 16.1 kg
DIY-18-HP-WM-230D25-O Capacity & Performance
Zone Capacity
1
Cooling Capacity
18,000 BTU
EER2
13.7
SEER2
22.5
Heating Capacity
18,000 BTU
HSPF2-4
11.5
HSPF2-5
8.5
Coverage Area
500 to 750 sq ft.
Outdoor Noise Level
58.5 dB(A)
Indoor Noise Level (Hi/Mi/Lo)
54.5/44.5/40.5/30.5/19.0 dB(A)
Electrical Requirements
Voltage
208-230V
Phase
1
Cycle
60 Hz
Max Fuse Breaker
20A
Min Circuit Ampacity
18A
Refrigerant & Piping
Refrigerant Type
R-454B
Refrigerant Volume
44.80 oz
Liquid Line Size
1/4"
Suction Line Size
1/2"
Max Line Set Length
98.4 ft.
DIY-18-HP-WM-230D25-O Features
Inverter
DC
Compressor Type
Rotary
Fan Only Option
Yes
Quiet Mode
Yes
Auto Cool
Yes
Wifi Compatibility
Yes
App Compatibility
Yes
Works with IOS
Yes
Works with Android
Yes
Remote Control Included
Yes
DIY-18-HP-WM-230D25-O Certifications & Warranty
Certifications
UL Listed, ETL Listed, Energy Star Certified, AHRI Certified
Warranty
7 Years Compressor 5 Years Parts Extended Limited Lifetime Replacement *If the original owner does not register the unit, the warranty defaults to the standard 5 year parts, 7 year compressor warranty **The original, registered owner must be enrolled in the MrCool Care Program every year in order to qualify for the 7 year full unit replacement for compressor failure and lifetime compressor replacement.
Frequently Asked Questions About MRCOOL DIY® 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O
Most Frequently Asked Questions
Other Questions
Product Overview
Zone / ROOM:
1 Zone
Air Handler BTU:
18k
Coverage Area:
750 sq.ft
Condenser BTU:
18k
Outdoor Operating Temp (Cool/ heat):
Warranty
MRCOOL DIY® 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O Reviews
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